package com.ruoyi.web.controller.common;

import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.util.*;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.qcloud.cos.COSClient;
import com.qcloud.cos.model.PutObjectRequest;
import com.qcloud.cos.model.PutObjectResult;
import com.ruoyi.aiTool.agent.SimpleQuestionAgent;
import com.ruoyi.common.core.domain.entity.QmsQuestion;
import com.ruoyi.framework.web.service.TokenService;
import com.ruoyi.web.cloud_service.QuetionClient;
import com.ruoyi.web.controller.common.DTO.SCommonFile;
import com.ruoyi.mapper.SCommonFileMapper;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.ClassPathResource;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUploadUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.framework.config.ServerConfig;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController
{
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);
    @Autowired
    private COSClient cosClient;

    @Autowired
    private ServerConfig serverConfig;

    private static final String FILE_DELIMETER = ",";
    @Autowired
    SCommonFileMapper sCommonFileMapper;
    @Autowired
    TokenService tokenService;

    @Autowired
    QuetionClient quetionClient;
    @Autowired
    SimpleQuestionAgent questionAgent;


    @PostMapping("/generateQuestion")
    public AjaxResult generateQuestion() throws IOException {
        QmsQuestion qmsQuestion=new QmsQuestion();
        UUID uuid=UUID.randomUUID();
        ClassPathResource resource = new ClassPathResource("prompts/question_word.txt");
        String promptTemplate = Files.readString(resource.getFile().toPath(), StandardCharsets.UTF_8);
        String randomId = UUID.randomUUID().toString();
        String finalPrompt = promptTemplate.replace("{randomId}", randomId);

        // 1. 调用 AI，生成题目内容和答案
        String aiResponse = questionAgent.ask(finalPrompt);
        ObjectMapper objectMapper = new ObjectMapper();

        Map<String, Object> questionMap = objectMapper.readValue(
                aiResponse,
                new TypeReference<Map<String, Object>>() {}
        );
        List<Map<String,Object>> typeList=new ArrayList<>();
        typeList=quetionClient.listType();
        Integer idInt = (Integer) typeList.stream()
                .filter(m -> m.get("TYPE").equals(questionMap.get("type")))
                .findFirst()
                .get()
                .get("id");

        Long type = idInt.longValue();
//        Long type= (Long) typeList.stream().filter(m->m.get("TYPE").equals(questionMap.get("type"))).findFirst().get().get("id");
        qmsQuestion.setTitle(questionMap.get("question").toString());
        qmsQuestion.setAnswer(questionMap.get("answer").toString());
        qmsQuestion.setTYPE(type);
        qmsQuestion.setSubTitle(questionMap.get("subtitle").toString());
        qmsQuestion.setCreateTime(new Date());
        qmsQuestion.setLEVEL(Integer.parseInt(questionMap.get("difficulty").toString()));

        AjaxResult ajaxResult=quetionClient.add(qmsQuestion);

        return AjaxResult.success("添加成功");
    }
    /**
     * 通用上传文件接口（腾讯云存储）
     * @param buckName 桶名字
     * @param key 桶key
     * @param file 文件
     * @return
     */
    @PostMapping("/uploadFile")
    public AjaxResult uploadFile(String buckName, String key, MultipartFile file) throws IOException {
        File fileTemp = File.createTempFile("upload-", ".tmp");
        String fileUU= UUID.randomUUID().toString();
        file.transferTo(fileTemp);
        PutObjectRequest putObjectRequest = new PutObjectRequest(buckName, key+"/"+fileUU+"/"+file.getOriginalFilename(), fileTemp);
        SCommonFile sCommonFile=new SCommonFile();

        try{
            PutObjectResult putObjectResult=cosClient.putObject(putObjectRequest);

            sCommonFile.setFileName(file.getName());
            sCommonFile.setFilePath(key+"/"+fileUU+"/"+file.getOriginalFilename());
            sCommonFile.setAddTime(new Date());
            sCommonFileMapper.insert(sCommonFile);
        }catch (Exception e){
            System.out.println(e);
            return AjaxResult.error("上传失败");
        }

        return AjaxResult.success("成功",sCommonFile);

    }

    /**
     * 通用下载请求
     * 
     * @param fileName 文件名称
     * @param delete 是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {
            if (!FileUtils.checkAllowDownload(fileName))
            {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete)
            {
                FileUtils.deleteFile(filePath);
            }
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求（单个）
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception
    {
        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files)
            {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + FileUtils.stripPrefix(resource);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }
}
